feat: 迭代器原型基建：%IteratorPrototype% 链 + 各集合迭代器原型

新增 %IteratorPrototype%（含 @@iterator 返回自身，经原型链被全部迭代器继承，it[Symbol.iterator]() === it 恒等）与 %ArrayIteratorPrototype%/ %MapIteratorPrototype%/%SetIteratorPrototype%/%StringIteratorPrototype%/ %RegExpStringIteratorPrototype%（链到 %IteratorPrototype%）；Array/Map/Set/ TA/String/matchAll 迭代器包装统一挂对应原型；补 Array/String 的 @@iterator 别名绑定。集合迭代器原型不含 return 方法（规范集合迭代器无 return）。
2026-08-15 22:57:03 +08:00
parent c230edeb57
commit ec32e42ce5
13 changed files with 274 additions and 18 deletions
@@ -26,4 +26,18 @@ pub fn bind_iterator(core: &Arc<KernelCore>, session: &KernelSession, global: &m
    );

    bind_global_value(core, global, "Iterator", JsValue::from_js_object(Box::into_raw(iterator)));
+
+    // %IteratorPrototype% 自身可迭代：@@iterator 返回 this，经原型链被所有
+    // 集合迭代器继承（it[Symbol.iterator]() === it 恒等）。
+    let iter_proto_ptr = session.builtin_world().iterator_proto.as_ptr() as *mut JsObject;
+    let iter_proto = unsafe { &mut *iter_proto_ptr };
+    crate::bindings::bind_well_known_method(
+        session.builtin_world(),
+        core,
+        iter_proto,
+        0,
+        "iterator",
+        oxide_builtins::iterator::iterator_symbol_iterator::<crate::vm::Vm> as *const (),
+        0,
+    );
 }